Fragments of human bones are embedded in the walls of this quaint alley.

A neighborhood park in the city of Cáceres hides what some believe are revolutionary examples of Neanderthal cave art.

The tallest tower in Cáceres's Old Town.

At this Arctic outpost, get to know members of the indigenous Sámi community and meet their herds.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

Every equinox this Maya pyramid puts on a spooky ancient light show.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

An island filled with hundreds of hanging, decomposing, decapitated dolls.